commit 4d93232b3aa9a22b467c4ce476927d591606aa86
Author: Laurie Kaptein <laurie@limoengroen.nl>
Date:   Sun Jul 2 14:13:05 2017 +0200

    announce-feedback-filtering-block-name-2805205-39.patch.

diff --git a/core/modules/block/js/block.js b/core/modules/block/js/block.js
index e9a8c732a5..d6b2bf6b3d 100644
--- a/core/modules/block/js/block.js
+++ b/core/modules/block/js/block.js
@@ -144,4 +144,4 @@
       });
     }
   };
-})(jQuery, window, Drupal);
\ No newline at end of file
+})(jQuery, window, Drupal);
diff --git a/core/modules/block/tests/src/FunctionalJavascript/BlockFilterTest.php b/core/modules/block/tests/src/FunctionalJavascript/BlockFilterTest.php
index b957a97651..d24ea03a9b 100644
--- a/core/modules/block/tests/src/FunctionalJavascript/BlockFilterTest.php
+++ b/core/modules/block/tests/src/FunctionalJavascript/BlockFilterTest.php
@@ -50,7 +50,7 @@ public function testBlockFilter() {
     $filter->setValue('ad');
     $session->wait(1000, 'jQuery("#drupal-live-announce").html().indexOf("blocks are available") > -1');
     $visible_rows = $this->filterVisibleElements($block_rows);
-    if(count($block_rows)>0){
+    if(count($block_rows)>0) {
       self::assertNotEquals(count($block_rows), count($visible_rows));
     }
 
@@ -78,14 +78,16 @@ public function testBlockFilter() {
   /**
    * Removes any non-visible elements from the passed array.
    *
-   * @param array $elements
-   * @return array
+   * @param NodeElement[] $elements
+   *   An array of node elements.
+   *
+   * @return NodeElement[]
    */
-  protected function filterVisibleElements($elements) {
-    $elements = array_filter($elements, function($element) {
+  protected function filterVisibleElements(array $elements) {
+    $elements = array_filter($elements, function(NodeElement $element) {
       return $element->isVisible();
     });
     return $elements;
   }
 
-}
\ No newline at end of file
+}